8M083X25 R14
APX Series P25 Interface
DVRS Installation & Programming Guide
–
PART II
January 2019
Page 118 of 153
Analog DVR Mode - Operation and Programming Overview
DVR Channel Setup for Analog Mode
To enable Analog DVR operation on a specific DVR channel the Channel Type (in the
Repeater Channel Setup Menu) must be set to
Analog
.
The DVR Tx / Rx Frequencies as well as the Tx / Rx PL or DPL must be programmed to
match the corresponding PSU settings.
NOTE:
Mixed DVR mode allows analog DVR operation by switching between default digital and
temporary analog modes as described in the Mixed DVRS Mode section. The use of mixed
mode for analog DVRS communications is not recommended since it requires special user
training due to the switching from digital to analog mode dynamics. Mixed DVR mode
should only be used when both analog and digital PSUs are required to operate on the
same DVR channel.
Group Calls
An analog local PSU in DVRS mode can communicate with other analog local PSUs via
an active Primary DVRS if all units are using the same radio channel (full duplex only) and
using matching PL / DPLs. Inbound PSU calls will be repeated on the MSU side over the
currently selected MSU TG / Channel. Outbound calls received by the MSU are repeated
to the local analog PSUs.
PSU Affiliation
When the MSU is operating on a P25 Trunked system (FDMA or TDMA), local analog
PSUs are affiliated when PTT ID (MDC1200) pass-through is enabled or when an
Emergency Alarm (MDC1200) is sent by the Local PSU. The above assumes the PSU
MDC ID is allowed on the P25 Trunking system. The MDC Unit ID and Trunked unit ID
ranges are not the same. Portable radio reprogramming may be required in order to have
valid unit IDs that can be recognized by the P25 Trunking system.
Emergency in Analog Mode
The Emergency operation in analog mode is based on the type of signaling as selected in
the Emergency Mode Setup Menu. The recommended analog mode signaling type is
MDC1200. Note that in addition to the DVR programming, MDC1200 signaling must also
be enabled in the local PSU personality. If MDC 1200 signaling is used, the Local PSU
Emergency Alarm MDC ID will be passed through to the system provided the MDC ID is
enabled (valid) on the system side.
NOTE:
MDC PTT ID pass-through is not supported by DVRS on Type 2 Trunking MSU modes.
Only MDC Emergency ID (with Emergency Alarm) pass-through is supported by the DVRS
on Type 2 Trunking MSU modes.
NOTE:
MDC ID offset. The DVR will add a user programmable value/offset to the PSU MDC ID
while proxying a call to a P25 Trunking system
